ElmoMC SimplIQ Digital Servo Drives-Guitar Evaluation Board User Guide - Manual (Page 54)

Whistle, Bell Guitar Evaluation Board User Guide Combined Evaluation Board
MAN-EVLBRD-WHI-BEL-GUI (Ver. 1.401)
54
.14 Auxiliary Feedback (Bi-directional)
When using one of the auxiliary feedback options, the relevant functionality of the AUX
FEEDBACK's ports are software selected for that option. Refer to the SimplIQ Command
Reference Manual for detailed information about Auxiliary Feedback setup.
For auxiliary feedback, one of the following options can be selected:
a. Emulated encoder outputs, used to provide differential buffered
emulated, encoder signals to another controller or drive. This option can
be used when:
 A Resolver or Analog Encoder is used as a main feedback device.
 The Evaluation Board is used as a current amplifier to provide position
data to the position controller.
 The Evaluation Board is used in velocity mode, to provide position data to
the position controller.
 The Evaluation Board is used as a master in follower or ECAM mode.
b. Differential auxiliary input, for the input of position data of the master
encoder in follower or ECAM mode.
c. Pulse-and-direction input, for single-ended input of pulse-and-direction position
commands.
Connect the auxiliary feedback cable into the AUX FEEDBACK port on the Evaluation Board.
The Aux. Feedback connector has two ports – B1 and B2.
Port B2 has three pairs of differential buffered outputs.
There are two modes of operation for this interface:
• Mode 1 (YA[4]=4)
When the Auxiliary port of the Whistle/Guitar/Bell is set by the software to act as an
emulated encoder output (this is practical only when using Resolver, Analog-Encoder,
Tachometer and Potentiometer as the main feedback):
 B1 input becomes inactive.
 B2 presents emulated differential buffered encoder output signals of the Main
Feedback.
• Mode 2 (YA[4]=2 or YA[4]=0) :
When the Auxiliary port of the WHI/GUI/BEL is set by software to act as an input:
 B1 becomes an active differential input.
 B2 presents differential buffered encoder output signals of B1.